See:wagon
A monoclinic mineral, (Mg,Fe)2 (PO4 )F ; magnesium is
replaced by ferrous iron or calcium; imperfect cleavage.
a. An underground coal car. Korson
b. A mine car.
c. Any vehicle for carrying coal or debris. Mason
d. A trailer with a dump body. Nichols, 1
An appliance that can bring a wagon completely to rest and is usually used
near the departure end of mine sidings. It can be rendered inoperative by
remote control if required. Nelson
An appliance that reduces the speed of wagons traveling above the design
value, but for wagons traveling at speeds less than this, it releases
energy by thrusting against the wheel flanges, therefore speeding up the
vehicle. See also:wagon retarder
a. Rooms or wide coal roadways into which mine cars or wagons are taken.
Nelson
b. A pillar method of working a relatively thick, flattish coal seam.
Nelson
A drilling machine mounted on a light, wheeled carriage. BS, 12
A device for moving railway wagons and locomotives short distances by
hand. It consists of a cast-steel wedge-shaped tip with a wood handle. The
tip is placed over the rail and under the wagon wheel and the up-and-down
movement of the handle exerts sufficient pressure on the wheel to move the
wagon. Nelson
A device for bringing a derailed wagon back onto the track. It usually
consists of ramp elements, which can be fixed at intervals along the track
or temporarily fitted to the track just beyond the end of the wagon. The
wagon is then pulled to cause the wheels to ride up the ramp and back on
to the rails. Nelson
An appliance that reduces the speed of a wagon traveling in excess of a
designed value (e.g., 3-1/2 mph), while having no effect on wagons moving
at speeds less than this figure. The appliance is a self-contained
hydraulic unit. Nelson
Rooms driven in inclined seams in such a way that an adequate gradient is
secured for cars, which are often hauled to the heads of the rooms.
Stoces
A wagon spotting appliance. It may be a "bogey" that is hauled backwards
and forwards on a separate track installed between the main track rails by
a winch. A forward pull on the bogey raises a pair of arms to engage in
the wagon axle, and a reverse pull lowers the arms to enable the bogey to
be drawn back under the next wagon ready for the next pull. Nelson
A power-operated structure for discharging coal or other material from a
railway wagon. Nelson
A monoclinic mineral, CaAl2 Si4 O12 .2H2 O ;
zeolite group; pseudocubic; colorless to white; in tuffaceous rocks in
geothermal areas.
An isometric mineral, CoFe ; forms minute grains with awaruite in the Red
Hills serpentines; at Wairau, South Island, New Zealand.
Involves the notion of an intention entertained by the holder of some
right, to abandon or relinquish instead of insisting on the right. It is a
question of fact. Proof of waiver must include proof of knowledge of the
facts upon which the waiver is based. Ricketts
Consists of three boards bolted or spiked together with the center board
offset. This arrangement produces a tongue and groove that makes Wakefield
sheet piling fairly watertight if the piles are properly driven and
tightly fitted together. Urquhart
A variant spelling of valaite. Tomkeieff
A honey-yellow variety of retinite containing little nitrogen, occurs in
brown coal at Walchow, Moravia, Czech Republic.
Eng. Cleaning coals by picking out refuse.
To deviate from the intended course, such as a borehole that is following
a course deviating from its intended direction. Also called deviating;
war; wandering. Syn:walking